Database: Iowa Public-Sector Union Recertifications

Public-sector workers have always voted to certify their unions, granting them permission to collectively negotiate contracts and pay on their behalf. They only faced elections if one of their members petitioned for decertification. Now, under Iowa's new collective bargaining laws, public-sector unions must re-certify every time they face a new contract negotiation - typically every two or three years. They must earn a majority of all eligible voters. Here's a look at elections that have happened so far this year.